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authorSabrina Dubroca <sd@queasysnail.net>2020-04-22 17:29:50 +0200
committerDavid S. Miller <davem@davemloft.net>2020-04-23 21:39:09 +0200
commitcc8e7c69db4dcc565ed3020f97ddd6debab6cbe8 (patch)
treeecde45a3e6eeaca368f4c119b61b9847a8bc6005 /drivers
parentmlxsw: Fix some IS_ERR() vs NULL bugs (diff)
downloadlinux-cc8e7c69db4dcc565ed3020f97ddd6debab6cbe8.tar.xz
linux-cc8e7c69db4dcc565ed3020f97ddd6debab6cbe8.zip
vxlan: use the correct nlattr array in NL_SET_ERR_MSG_ATTR
IFLA_VXLAN_* attributes are in the data array, which is correctly used when fetching the value, but not when setting the extended ack. Because IFLA_VXLAN_MAX < IFLA_MAX, we avoid out of bounds array accesses, but we don't provide a pointer to the invalid attribute to userspace. Fixes: 653ef6a3e4af ("vxlan: change vxlan_[config_]validate() to use netlink_ext_ack for error reporting") Fixes: b4d3069783bc ("vxlan: Allow configuration of DF behaviour") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
-rw-r--r--drivers/net/vxlan.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 45308b3350cf..a5b415fed11e 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -3144,7 +3144,7 @@ static int vxlan_validate(struct nlattr *tb[], struct nlattr *data[],
u32 id = nla_get_u32(data[IFLA_VXLAN_ID]);
if (id >= VXLAN_N_VID) {
- NL_SET_ERR_MSG_ATTR(extack, tb[IFLA_VXLAN_ID],
+ NL_SET_ERR_MSG_ATTR(extack, data[IFLA_VXLAN_ID],
"VXLAN ID must be lower than 16777216");
return -ERANGE;
}
@@ -3155,7 +3155,7 @@ static int vxlan_validate(struct nlattr *tb[], struct nlattr *data[],
= nla_data(data[IFLA_VXLAN_PORT_RANGE]);
if (ntohs(p->high) < ntohs(p->low)) {
- NL_SET_ERR_MSG_ATTR(extack, tb[IFLA_VXLAN_PORT_RANGE],
+ NL_SET_ERR_MSG_ATTR(extack, data[IFLA_VXLAN_PORT_RANGE],
"Invalid source port range");
return -EINVAL;
}
@@ -3165,7 +3165,7 @@ static int vxlan_validate(struct nlattr *tb[], struct nlattr *data[],
enum ifla_vxlan_df df = nla_get_u8(data[IFLA_VXLAN_DF]);
if (df < 0 || df > VXLAN_DF_MAX) {
- NL_SET_ERR_MSG_ATTR(extack, tb[IFLA_VXLAN_DF],
+ NL_SET_ERR_MSG_ATTR(extack, data[IFLA_VXLAN_DF],
"Invalid DF attribute");
return -EINVAL;
}